Transient Immunity TesterKES7700 Series

Complying with International Standards! Best Suited to EMC Testing for Automotive Components

Transient Immunity Tester KES7700 Series are transient surge tester that utilizes a compact unit system. A surge generator circuit is installed for each pulse unit as the tester meets the requirement of ISO7637-2, ISO7637-3, ISO16750-2, JASO D001, SAEJ1113, and other standards. The KES7700 Series meets a broad range of independent automobile manufacturer standards as well. The ISO7637 standard specifies Pulse 1, Pulse 2a, and Pulse 3a/3b, while the ISO16750-2 standard specifies Pulse 5a/5b. Each pulse simulates the following: electromagnetic phenomena produced by electronic equipment joined by wire harnesses during an automobile’s normal operation, electromagnetic coupling during switch opening and closing, and load dump surges produced by the alternator when the battery is disconnected. Each pulse also tests the tolerance of on-board electronic equipment. In this testing, malfunctions and breakdowns involving on-board electronic equipment are evaluated.

Applications

System components

The KES7702/KES7703 main frame can be connected with up to 7 pulse modules (5 plug-in type modules + 2 external-connect type modules). By replacing pulse modules, it is possible to comply with various automotive manufacturer’s requirements, such as the ISO 7637-2 and JASO D001 standards.

*In the KES7700 series, each pulse module supports a specific surge waveform. If the related international standard is revised, the system can be upgraded simply by replacing pulse modules. This system architecture also makes it easy to meet individual auto makers’ test requirements.

Test reproducibility improvement

The KES7702/KES7703 mainframe are designed to simplify the setup of the test environment prescribed in the ISO7637-2 standards. Preparation of the test environment can lead to test reproducibility.

Easily set up a test environment as specified in the ISO 7637-2 standard

Output waveform stability

Placing the output system on the front surface and the power supply system and signal system on the rear surface made it possible to achieve stable transient surge output and communication control. Also, a bus bar was utilized for the output end. Since the input and communication control systems of each unit are separated from the output lines, malfunction of the tester itself due to transient surges being output is less likely to occur.

Test reproducibility

Since the lower part of mainframe KES7702/KES7703 testers is an SG unit, braided wire and other ground cables are unnecessary as a connection with a ground plane can be made. Also, the output terminal is set at a height of 50 mm from the ground plane (reference ground surface) as prescribed in the ISO7637-2 standards.